Ifanadiana Sentinel2 NDVI

This dataset contains Normalized Difference Vegetation Index (NDVI) values extracted from Sentinel-2 imagery for areas around four major villages per fokontany. NDVI values were extracted within a 1 km buffer around each village, and an average weighted by the number of buildings per village was calculated for each measuring point.

Columns :
- comm_fkt : name of fokontany using standardized ‘new_commune’_’fokontany’ nomenclature
- vill_ndvi : ndvii values calculated from Sentinel-2 images
- date : date in format: YYYY-MM, corresponding to year and month

Data and Resources

Additional Info

Field Value
Source Copernicus data
Author Michelle Evans
Maintainer RANDRIANJATOVO Tokiniaina
Last Updated August 20, 2025, 14:28 (UTC)
Created July 16, 2025, 15:26 (UTC)
Data link https://gitlab.com/pivot-sci-apps/smaller-backend/-/blob/main/data/model-variables/vill_ndvi.csv?ref_type=heads
Processing steps Processing and treatment of images using Sen2Chain : Download L1C (top of atmosphere) products from available suppliers / Processing of L1C to L2A (bottom of atmosphere) products / Calculation of cloud masks and radiometric indices; Calculation of NDVI using the following equation: (B08 - B4) / (B08 + B4) Extraction of NDVI values from Sentinel-2 imagery. Definition of a 1 km buffer around each major village. Calculation of a weighted average of NDVI values based on the number of buildings per village. https://espace-dev.frama.io/sen2chain/